Yeah but your temps are tempered by an overall oceanic climate, even though you're farther north. Not sure where you are, but the 57th parallel includes the area around Aberdeen, so I plugged that city in (sorry for the Fahrenheit scale, but you get the message). Notice not only how much colder it gets here but also hotter! The winter-summer differential is much more dramatic.
View attachment 230581
View attachment 230582
And sure you get snow, but nothing like here. It's normal to get a foot of snow here in a single storm. And a big nor'easter can dump two feet.
As a Scottish fella who lives in Chicago - I can say that the higher latitude of Scotland is a fun talking point but doesn't translate to the extremities in weather temperature. In the US it's called the "rust belt" - they throw down grit like you wouldn't believe to try and tackle the freezing temps and the snow!
However, the roads in Scotland over winter are also salted loads as the OP said, so you're both likely quite close in terms of rust content. My 2015's subframe is definitely not a shade resembling black any more...